From: Oliver Neukum <oneukum@suse.com>
To: Lukas Wunner <lukas@wunner.de>
Cc: David Yang <mmyangfl@gmail.com>, Rajat Jain <rajatja@google.com>,
Ashok Raj <ashok.raj@intel.com>,
linux-pci@vger.kernel.org
Subject: system generating an NMI due to 80696f991424d ("PCI: pciehp: Tolerate Presence Detect hardwired to zero")
Date: Wed, 15 Jan 2020 11:26:26 +0100 [thread overview]
Message-ID: <1579083986.15925.31.camel@suse.com> (raw)
Hi,
I got a bug report about some systems generating an NMI and
subsequently crashing bisected down to 80696f991424d.
Apparently these systems do not react well to __pciehp_enable_slot
while no card is present. Restoring the check to __pciehp_enable_slot()
removed in 80696f991424d makes the current kernels work.
What is to be done? Do you want a special case for the affected
systems based on DMI, or should I revert 80696f991424d?
Regards
Oliver
next reply other threads:[~2020-01-15 10:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-15 10:26 Oliver Neukum [this message]
2020-01-15 11:24 ` system generating an NMI due to 80696f991424d ("PCI: pciehp: Tolerate Presence Detect hardwired to zero") Lukas Wunner
2020-01-16 5:35 ` Lukas Wunner
2020-02-05 12:15 ` Oliver Neukum
2020-02-08 20:31 ` Lukas Wunner
2020-02-19 10:25 ` Oliver Neukum
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